I. Make question
1. How far is it from your house to school?
2. How does he go to work ?
3. How long did it take to walk to school?
4. When will you go to the FF in DL?
IV. RewriteL
1. It's about 20 kms from my house to HN.
2. My brother used to watch TV in his free time.
3. Much biogas will be used in the future.